US2808424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of methyl borate
Assignee: American Potash and Chemical Corp
•
Filing: 1955-06-22
•
Granted: 1957-10-01
•
Expires: 1975-06-22
Abstract
No abstract record available.
Inventors
- 👤 May Frank Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:43
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A PROCESS FOR PRODUCING TRIMETHYL BORATE COMPRISING REACTING BORIC OXIDE METHANOL TO PRODUCE BORIC ACID AND METHANOL-TRIMETHYL BORATE AZEOTROPE, RECOVERING THE AZEOTROPE, REACTING THE RECOVERED AZEOTROPE WITH BORIC OXIDE TO PRODUCE ADDITIONAL TRIMETHYL BORATE AND A SOLID PHASE BORIC ACID, SEPARATING AND RECOVERING THE TRIMETHYL BORIC AND THE SOLID PHASE BORIC ACID, REACTING THE RECOVERED BORIC ACID WITH METHANOL TO PRODUCE ADDITIONAL TRIMETHYL BORATE-METHANOL AZEOTROPE AND WATER, AND REACTING AND ADDITIONAL TRIMETHYL BORATE-METHANOL AZEOTROPE WITH BORIC OXIDE TO FORM FURTHER TRIMETHYL BORATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |